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Official data from INPI

PROCESSO PARA PRODUZIR UMA FOLHA MICROPOROSA, MATERIAL DE FOLHA MICROPOROSA E ESTRUTURA LAMINADA

ConcedidaInvention Patent

Application data

Number

PI8304887

Type

Invention Patent

Filing

09/08/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing09/08/83
  2. Publication04/24/84
  3. Examination07/29/86
  4. Allowance06/13/89
  5. Grant11/28/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

G. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

416.140 · 09/09/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

10/10/1989

RPI 990

Deferimento

#9.1

06/13/1989

RPI 973

Exigência - art. 36 da LPI

#6.1

06/28/1988

RPI 923

6.2

09/15/1987

RPI 882

Solicitação de exame técnico

#4.1

07/29/1986

RPI 823

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

11/08/1983

RPI 681

Carta-patente expirada

#21.1

Patente extinta em 08/09/98

07/01/2008

RPI 1956

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